Asus X-Mars K8P1 CPU Fan For AMD Socket 754/939/940 CPU Supports - AMD Athlon 64, AMD Athlon 64 FX, AMD Athlon 64 X2 all series (Dual Core CPU) Power Connector - 3 pin Heatsink Material Dimension (mm) - 97 x 74 x 50 / Material - Electro-plating Aluminum fins, copper base and 2 heat pipes Fan Dimension (mm) - 70 x 70 x 15, Bearing Type - 1 ball, Speed - 2000 ~ 5400rpm +- 10%, Max. Airflow - 41 CFM, Max. Air Pressure - 0.248 inch-H2O, Rated Voltage - 12V, Operation Voltage - 6~12.5V, Input Current - 0.14A, Life Expectation - 50000 Hr Net Weight - 385g